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Color and Light

QuestionAnswer
absorb/absorption To take in or use up and not reflect
Concave A surface that is curved inward, such as a mirror, or a lens that is thinnest at the center
Convex a surface that is curved outward, such as a mirror, or a lens that is thickest at the center
Cornea Transparent membrane of the eyeball
Dispersion The separation of white light into colors by refraction
Energy The ability to do work
Image An optically formed representation of an object made by a mirror or lens
Inverted To turn upside down; to reverse the position of something
Iris the pigmented part of the eye which regulates the size of the pupil by contracting and expanding around it
Lens/Lenses Curved piece of glass or other transparent substance used to refract light rays converge or diverge forming an image
Light Bright form of energy given off by something (such as the sun) that lets one see objects
Luminous Emitting or reflecting light
Opaque Material that lets no light pass through it
Optic Nerve Connects the retina to the brain
Optics Pertaining or referring to sight or the eye
Pigment Pigment– a material used as coloring matter, suitable for making paint
Prism Solid figure with triangular ends and rectangular sides, used to disperse light into a spectrum
Pupil The round opening in the iris of the eye controls amount of light that falls on the retina
Reflect/Reflection The bouncing back of light from a surface
Refract/Refraction The bending of a ray of light as it passes obliquely from one medium into another
Retina The light's sensitive membrane lining the inner eyeball connected by the optic nerve to the brain
Sclera The white of the eye
Translucent A material that lets some light pass through it; objects can not be clearly viewed
Transparent A material that lets most light pass through it; objects can be clearly viewed
Artificial and Natural Two sources of light
What type of materials are good reflectors of light? Smooth, shiny and light colored materials
Sun Is an important source of natural light.
What happens when sunlight hits the snow? Some of the sunlight is absorbed and the light rays absorbed and are changed into heat energy
Why is the driveway hotter than the grass during the summer? Light rays are absorbed and are changed into heat energy
Absorbed When something is black, all color is absorbed or reflected
Reflected When something is white, all color is absorbed or reflected
White When all the colors of light are mixed together, you see what color
Larger concave mirrors make an image appear smaller or larger?
Smaller Convex mirrors make an image appear smaller or larger
Convex Your eye has a convex or concave lens?
What does a prism do? refracts the white light and separates the colors into a band of colors called the visible spectrum
How does light travel through transparent materials? in a straight line
Why does a pencil in a cup of water appear broken into two pieces? because the water bends the light rays from the pencil
Created by: ccdpittsford